Joseph b



(No Model.)

J. B. BENNETT.

ADJUSTING DEVICE.

No. 425,486. Paten'tedApr. 15,1890.

a x v a 93%{30 13 1s L UNITED STATES PATENT JDSEPl-I B. BENNETT, OF INATERTOYVN, WVISCONSIN, ASSIGNOR TO THE IVATERTOI/VN MAOHIN E COMPANY, OF SAME PLACE.

ADJUSTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 425,486, dated April 15, 1890. Application filed July 10, 1839. Serial No. 317,006. (No model.) A

To all whom it may concern: I

Be it known that I, JOSEPH B. BENNETT, of Watertown, in the county of Jefferson and State of lVisconsin, have invented a new and useful Adjusting Device; and I do hereby declare the following to be a full, clear, and exact description of said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My improved device is especially adapted for adjusting the sand-guard vertically and holding it rigidly upon the frame of a polishing machine, and I have shown it in the drawings in connection with so much of a polishing-machine as is necessary to exhibit its method of use.

In a polishing-machine there is need of delicate adjustment of the table or sandguard and steadiness of support, and on account of the violent shaking of the machine the several parts of the adjusting device need to be strong of grip and to'be locked in position, all of which ends my device is intended and adapted to secure.

In the drawings, Figure 1 is a view of my complete device, part being in sect-ion and shown in connection with portions of a polishing-machine frame, and the table or sandguard also shown in section. Fig. 2 is a transverse section of my device on line 2 2 of Fig. 1. Fig. 3 is a modified form of my device in which the frame of the machine is made to serve for the outer case of the bolt. Figs. and 5 are slightly-modified forms of the construction shown in Fig. 1.

The bolt A is of cylindrical form, and is provided at one end with a smaller shank B, projecting therefrom centrally, the outer portion of which is screw-threaded and carries a nut O thereon. A case D has a vertical socket, in which the bolt A is fitted movably, and a small bolt-screw E turns through the bottom of the case D against the lower end of the bolt A,whereby the bolt A and its load may be carried upwardly, the bolt and its load being of suficient weight to carry it down.

when the screw E is withdrawn from its support. The screw E is provided with a jamnut- F, turning against the surface of the case D to lock the screw E in position. A setscrew G turns through the case D and enters a recess H therefor in the bolt A, which recess II has preferably an inclined or graduated bottom, as shown in Fig. 1. The case D rests on the frame I, and a smaller part of the case D passes through an aperture therefor in the frame I.

In the form shown in Fig. 4 the part D", corresponding to the part D in the form shown in Fig. 1, extends below the frame I, and is provided with a jam-nut K, turning by a screw-thread thereon, whereby the case is locked on the frame I.

In the modified form shown in Fig. 5 the part D" corresponding to the part D in Fig. 1, is upset or riveted against the lower edge of the'frame I, whereby the case is locked to the frame.

In the form shown in Fig. 3 the frame I is constructed with a socket and serves for the case D, as shown in the other figures. The sand-guard L rests on the top of the body A, and the nut C, turning against the sand-guard, holds it rigidly to the bolt.

I/Vhat- I claim as new, and desire to secure by Letters Patent, is-

1. In a polishing-machine, an adjusting device consisting of a bolt A, a smaller shank B, integral with the bolt A, and a nut C,turning on the shank B, whereby the table or sandguard is clamped rigidly to the bolt, in combination with a case in which the bolt is supported, an adj Listing-screw E, turning through the case against the end of bolt A, and a jamnut F, turning on screw E against the case, substantially as described 2. In a polishing-machine, an adjusting device consisting of a bolt A, having a smaller shank B integral therewith, and a nut C, turning on the shank, whereby the table or sandguard is clamped rigidly to the bolt, in combination with a case in which the bolt is supported, an adj Listing-screw E, turning through the case against the end of the bolt A, and a setscrew G,turning through the case against the bolt A in a recess H therefor, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH. B. BENNETT.

Witnesses:

ANNA FAUST, O. T. BENEDICT. 

